Fan-motor.



Ila-799,952. v PATENTED SEPT. 19, 1905.

' J. P. THUNELL. I

FAN MOTOR.

APPLICATION rum) AUG. 16,1904.

UNITED STATES PATENT OFFICE;

Specification of Letters Patent.

Patented Sept. 19, 1905.

A li ati fil d August 16, 1904. Serial No, 220,937.

To all whom it may concern.-

Be it known that I, JOHN F. THUNELL, a citizen of the United States, residing at Salt Lake City, in the county of Salt Lake and State of Utah, have invented certain new and useful Improvements in Fan-Motors, of which the following is a specification.

This invention relates to spring-motors, and pertains especially to a frame for fanmotor gearing and a casing for the fan and its driving gear or mechanism.

The object of the invention is to provide a novel and peculiar gear-frame and a casing to conform with the shape of the frame, the gearing, and the fan and provided with a hinged cover, a stem-winding journal bearing in one end of the casing, and a contracted throat terminating in a flaring mouth at the other end of the casing.

With these and other objects in view the invention consists of a frame in which the gear and pinion shafts of a train of gearing are journaled and within which the said gearing is operated and a coilspring is located, an arm projecting from the frame and having two fan-gears and the fan-shaft journaled therein, a shield on the frame, and a casing having a winding-stem journal therein, and

a hinged cover the length and shape of the casing.

Trains of gearing operated by a windingspring for driving fans and various other devices have been provided similar to my motor; but the gear-frame and housing or casing hereinafter described produce improved re sults not attainable in other motors of this class.

In the accompanying drawings, forming part of this application, Figure 1 is an elevation showing the casing closed. Fig. 2 is a similar view, partly broken away, showing the casing open. Fig. 3 is a longitudinal section of the casing, taken on the line :1: m, Fig. 1. Fig. 4 is a perspective view of the gear-frame; Fig. 5 is a section on the line y y, Fig. 2.

The same numeral references denote the same parts throughout the several views of the drawings.

The gear-frame is preferably in two parts 1 and 2, joined together at 3 and 4, and when secured togetherone end of the frame forms a U-shaped opening 5 and the other end an elongation 6. The spring-winding gearwheel 8, which meshes with a pinion 9, is located with saidpinion and gear 14 in the opening 5, and the pintle 10 of the pinion 9 eX- tends through and is journaled in a bearing 11 in the end of the frame, said pintle having the winding-stem 12 pivoted thereto at 1 and provided with a handpiece 13 for turning the stem. The train of pinions and gears connecting the gear 14 with the fan-gears 15 have their shafts journaled in the frame parts 1 and 2, and said gears and pinions work between the said two frame parts to impart motion to the fan. A winding-spring 7 is located between the gear-wheels 8 and 14, and the pinion 9 works between said wheels in mesh'only with the wheel 8. An arm 16 projects from one side of the frame beyond the end of the latter and is provided with a j ournal-bearing 17 for the shaft 18 of the fan 19. Said shaft is provided with a pinion 20, driven bythe fan-gears 15. An arc-shaped shield 21 is formed on or secured to the said frame end and the purpose of which will be hereinafter disclosed.

The casing 22 has concavities 23 in its sides near one end to permit close fitting of the spring and winding gears, and said end is provided with a journal-bearing 24 for the winding-stem. The other end is circularshaped and terminates in a contracted.

throat 25, having a flaring mouth 26 formed by the bottom and sides of the casing and casing-cover 27. The circular-shaped portion of the casing has a fan-draft opening 28,

- across which extends a bearing 29 for the fanshaft, and the cover 27 is of the same shape as the casing, being hinged at 30 and having an opening 31 conforming to the casingo enin 28. A bar 32 braces the throat of t e casing and a plate 33, having an angle or edge 34 projecting into the throat to further contract the latter. The motor is swung into and out of the casing by working the motor-frame on the pivot 1 while the pintle 10, stripped of the ring and handpiece 13, is slid into and out of the casing end" -When the motor is in proper position within the casing, the shield 21 separates the body of the casing from the fan, thus cutting off back draft of the fan, so that the fan-currents are directed throughthe throat of the casing. The shield closing as it does the end portion of the casing containing the gearing the latter is protected from dust or other injurious foreign matter that may be drawn in by the fan. The circular-shaped portions of the casing and cover, as well as the throat and mouth, are rovided with a felt or other suitable fabrio ining 35 to lessen or deaden the IIO " end of the frame, and a shield upon said noise of the motor, and the concaved and circular portions of the casing are connected by a neck 36.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a spring-motor, of a gear-frame having a U-shaped opening and terminating in an elongation, a ournalbearing arm projecting beyond the elongated frame end.

2 The combination, in a spring-motor, of a frame carrying the motive power, a casing in which the motor is secured said casing having concavities at one end and a circularshaped' portion terminating in-a throat, a fan journaled in the frame and the cover having a shape conforming With the casing and hinged to the latter.

3. The combination, with a fan, of means for propelling it comprising a windingspring, winding-gears, a pair of fan-gears, and a train of gearing connecting the Winding-gears with the fan-gears, a frame having a projecting arm in which the fan-gears are journaled, a Winding-stem projecting from one end of the frame, and a fan-shield upon the other end of the frame.

4-. The combination, with a spring-motor, of the .motor-frame, an arm projecting beyond one end of the frame, a fan having one v end of its shaft journaled in the arm, and a shield upon said frame end, a casing having a journal-bearing for the other end of the said shaft and a circular-shaped portion separated from the body of the casing by the said shield, and a winding-stem ournaled in the casing.

5. A gear and fan casing comprising concaved sides, a circular fan-receivin portion having an opening, a contracted throat eX- tending from the latter portion and terminating in a flaring mouth, a shaft-bearing across said opening, and a hinged cover conforming to the shape of the casing and having an opening to register with the said casing-opening.

6. The combination, with a fan-motor casing having concaved sides, of a circularshaped portion provided with a contracted throat terminating in a flaring mouth, and a neck connecting the said portion with said sides, a plate secured in the circular-shaped portion and having an angle edge projecting intothe throat, substantially as and for the purpose set forth.

In witness whereof I hereunto set my hand in the presence of two witnesses.

JOHN F. THUNELL.

Witnesses:

R. K. HARDY, W. A. SHEPHERD. 

